Sold/Expired WTB: 2x SSC P4 Hi-CRI emitters.

[fyrstormer]

I've found sources for various types of LEDs, but I've never managed to find any Hi-CRI P4s. Anyone have a couple they'd like to sell me?

 

[Tekno_Cowboy]

I've got a group buy going on if you don't need them right away. Link is in my sigline.

 

[fyrstormer]

Okay...I see you've got two bins, T1STx and T2SS. What's the difference between them?

 

[Tekno_Cowboy]

T1STx is higher color temp, T2SSx is about 10 lumens brighter. Either one is very nice.

 

[fyrstormer]

Both rated at 93% CRI? Are we talking a 10 lumen difference at 50 lumens nominal, or a 10 lumen difference at 200 lumens nominal?

 

[Tekno_Cowboy]

Yep, both are 93 CRI

IIRC it's at 350mA, and 10 is the average. min difference is none, max is 20 lumens.

 

[fyrstormer]

Now that you mention 350mA...what's the max current on these? Is it any different than "normal" P4s? As far as I know it isn't, but I suppose I should ask.

 

[Tekno_Cowboy]

IIRC the spec sheet says 800mA, but I've run them at 1A with no issues in 16 months time.

I will say that there isn't much extra gain in output past about 850mA with SSC emitters though. If you want to see a worthwhile gain from an SSC past 850mA, you have to jump straight to about 1.2A. For most of my uses, this is just way too big a hit to the efficiency.

For more info, take a look at the datasheet in the OP.

 

[fyrstormer]

I did, but it wasn't clear whether there were special considerations regarding the Hi-CRI emitters. Anyway, that confirms what I thought I already knew. I posted my interest in your group buy thread.

If anyone happens to have one of these on-hand, though, I'm still interested in buying one right now, so I can get the ball rolling on the project I'm going to use them for.

 

[Tekno_Cowboy]

I can probably help you out there. I'm sure I can find one to hold you over. Just shoot me a PM and we'll work out the details.